Diving into a Simple Anguilliform Swimmer's Sensitivity.

@article{Battista2020DivingIA,
  title={Diving into a Simple Anguilliform Swimmer's Sensitivity.},
  author={Nicholas A. Battista},
  journal={Integrative and comparative biology},
  year={2020},
  volume={60 5},
  pages={
          1236-1250
        }
}
Computational models of aquatic locomotion range from modest individual simple swimmers in 2D to sophisticated 3D multi-swimmer models that attempt to parse collective behavioral dynamics. Each of these models contain a multitude of model input parameters to which its outputs are inherently dependent, that is, various performance metrics. In this work, the swimming performance's sensitivity to parameters is investigated for an idealized, simple anguilliform swimming model in 2D. The swimmer… 

Figures from this paper

Exploring the sensitivity in jellyfish locomotion under variations in scale, frequency, and duty cycle.

TLDR
Thorough 2D parameter subspace explorations illustrated optimal parameter combinations in which give rise to enhanced swimming performance, and Pareto-like fronts were identified in the overall performance space involving the cost of transport and forward swimming speed.

Don't be jelly: Exploring effective jellyfish locomotion

TLDR
An open source implementation of the immersed boundary method was used to solve the fully coupled fluid-structure interaction problem of a flexible jellyfish bell in a viscous fluid and offers an open source computational jellyfish locomotion model to the science community to be used as a starting place for future numerical experimentation.

Hopscotching jellyfish: combining different duty cycle kinematics can lead to enhanced swimming performance

TLDR
Overall, robust duty cycle combinations were determined that led to enhanced or impeded performance in jellyfish locomotion, and the net effects were greater for cases involving lower contraction frequencies.

Wavelet analysis of a flexible filament kinematics: emulating C. elegans swimming behavior

This paper discusses different aspects of an active flexible filament propulsion in a liquid medium. The immersed boundary method is used to model a flexible filament immersed in Newtonian fluid at

Melding Modeling and Morphology: A Call for Collaboration to Address Difficult Questions about the Evolution of Form and Function.

TLDR
This introduction to the symposium's issue discusses the challenges of interdisciplinary collaborations, suggests possible avenues available to create new collaborations to create a unifying framework for evolutionary biomechanics, and highlights research stitching together the two tacks.

Passive concentration dynamics incorporated into the library IB2d, a two-dimensional implementation of the immersed boundary method

TLDR
This method is applicable to a broad range of problems in the life sciences, including chemical sensing by antennae, heat dissipation in plants and other structures, the advection-diffusion of morphogens during development, filter-feeding by marine organisms, and the release of waste products from organisms in flows.

References

SHOWING 1-10 OF 101 REFERENCES

Optimal morphokinematics for undulatory swimmers at intermediate Reynolds numbers

Undulatory locomotion is an archetypal mode of propulsion for natural swimmers across scales. Undulatory swimmers convert transverse body oscillations into forward velocity by a complex interplay

Numerical investigation of the hydrodynamics of anguilliform swimming in the transitional and inertial flow regimes

TLDR
The propulsive efficiency of anguilliform swimmers at St* is not an increasing function of Re but instead is maximized in the transitional regime and the form drag decreases while viscous drag increases as St increases.

On the best design for undulatory swimming

  • C. Eloy
  • Physics
    Journal of Fluid Mechanics
  • 2013
Abstract Most aquatic vertebrates swim by passing a bending wave down their bodies, a swimming mode known as undulatory propulsion. Except for very elongated swimmers like eels and lampreys, these

Gait and speed selection in slender inertial swimmers

TLDR
A minimal theoretical framework is presented that synthesizes the roles of passive body elasticity, hydrodynamics, muscular activation, and proprioceptive sensory feedback in inertial swimmers to provide a simple mechanistic view of swimming consistent with natural observations and suggest ways to engineer artificial swimmers for optimal performance.

Scale effects in the kinematics and dynamics of swimming leeches

TLDR
The swimming kinematics and dynamics of organisms of very different sizes swim in fundamentally different physical realms, owing to the relative scaling of viscous and inertial fluid stresses as a function of size and speed are addressed.

A MODEL OF RAPID-START SWIMMING AT INTERMEDIATE REYNOLDS NUMBER: UNDULATORY LOCOMOTION IN THE CHAETOGNATH SAGITTA ELEGANS

TLDR
The model is constructed such that it predicts body velocity for an organism starting from rest and accelerating rapidly by swimming with prescribed wave kinematics, and shows that instantaneous forces generated by the undulating body are much larger than average forces and consist of non-trivial inertial terms, even for such small organisms.

Simulations of optimized anguilliform swimming

TLDR
The results of the present simulations support the hypothesis that anguilliform swimmers modify their kinematics according to different objectives and provide a quantitative analysis of the swimming motion and the forces experienced by the body.

Flying and swimming animals cruise at a Strouhal number tuned for high power efficiency

TLDR
Tuning cruise kinematics to optimize St seems to be a general principle of oscillatory lift-based propulsion of swimming and flying animals.

Undulatory and oscillatory swimming

  • A. Smits
  • Engineering
    Journal of Fluid Mechanics
  • 2019
Theory and modelling remain central to improving our understanding of undulatory and oscillatory swimming. Simple models based on added mass can help to give great insight into the mechanics of
...